Nut lock



NUT LOCK Filed Aug. 28, 1929 Patented Feb. 21, 1933 UNITED STATES IRVINE WILUNSON, 0F PHILADELIHIA, :PENNSYLVANIA NUT LOCK Appncation ined August 28, `192,8.` serial No. 888,886.

My invention relates to new and useful improvements in nut locks and has for its object to provide an exceedingly simple and effective device of this description which will provide for the locking of a nut upon its bolt at various degrees in the rotation of the nut relative to the bolt.

A further object of my invention is to provide a plurality of locking means for engaging a series of notches carried by the nut, any one of which locking means may be brought into action to securely hold the nut against rotation upon the bolt in either direction.

A still further object of my invention is to provide for the ready manipulation of the locking means to put them in the positions for holding the nut against rotation while rendering it exceedingly simple to unlock the locking means.

With these and other ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims. Y

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, I will describe its construction in detail, referring by numerals to the accompanying drawing forming a part of this application, in which Fig. 1 is a plan view of my improved device.

Fig. 2 is a washer.

Fig. 3 is an edge view of Fig. 2.

Fig. t is a view showing the bolt passed through the clamp and the nut seated upon the locking washer.

Fig. 5 is an enlarged fragmentary View showing one of the locking tongues drawn into locking position.

Fig. 6 is a plan view of the nut and the detail view of the locking locking washer' having radial dotted linesv thereon to illustrate the manner of setting up the nut in small degrees.

In carrying out my invention as herein embodied, 10 represents a bolt having a portion of its body flattenedlongitudinally as indicatedatll and'also having a' shallow- 'V-shaped groove 12 formed centrally of said flattened portion. v 13 represents" the locking washer having a central opening 14 for free vpassage over 55 the boltand a straight wall 15, and likewise a V-shaped projection 16 for fittingfin the' groove `12 so that when this washervis placed upon the bolt, it may freely slide lengthwise thereof but Ywill be held positively against rotation on the bolt. This washer has formed thereon a series of tongues 17 which are variously spaced and as shown in Fig. 6 are `here. spaced as follows :a- Y

The tongue nearest the bottom of the sheet and the tongueffurtherest away therefrom is spaced apart a vdistance equal to one-twelfth of the circle while the rst named tongue and the one next to the lastnamed tongue isv onetwentyffourth of the circle apartrkand the other tongue is one-thirty-sixth' ofthe circle awayV from' the first named tongue, forV .thei purposes hereinafter explained. Y 'y 18 represents the nut for threading upon the' bolt 14 and this nut has a circular liange 75` 19 at the base thereof, and this flange Vhas formed therein the locking notches 20 intowhich the tongues 17 maybe drawn and when one of these. tongues is drawn into onerof y these notches, it is obvious that the nut will 30 'be securely lockedupon the bolt against rotation in either direction, and since the locking notches 20 are spaced apart equally, the spacing of the tongues at varying distances apart v provides for the locking of the nut at every slight turn thereof and when the tongues are spaced as shown in Fig. 6 this locking may take place at every .thirty-sixth of a turn. If desired, a greater number of tongues may be used, giving a greater variety of spacing so as to decrease the degree of a circle through which the nut must be turned to bring it into a locking position and this may be carried to such an Vextent as to provide for the locking Y of the nut upon the slightest turn thereof, thus giving great accuracy of adjustment as will be readily understood.

Each of the locking tongues is turned up at right angles and terminates in the hook 21 p in order that a tool may be engaged in said hook to bend the tongue upward into one of the notches 20 as clearly shown in Fig. 5. This arrangement provides a ready means for unlocking the nut since it is only necessary to strike the hook of the upturned tongue, a slight hammer blow to carry said tongue out of engagement with the notch and thus free the nut for further rotation in set up or back-ofi'.

In nut locks for certain classes of work, it is highly essential that provision ibe made for the locking of the nut on slight turns thereof and that when locked, the nut will be held against rotation in either direction and this is effectually accomplished byV my invention in a simple and inexpensive manner by spacing the locking tongues apart at varying distances.

Of course I do not wish to be limited to the exact details of construction as herein shown,

` as these may be varied within the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described my invention,

what I cla-im as new and useful is In a nut lock, a bolt having a longitudinal spline groove, a nut threaded thereon, a flange carried by the base end of said nut and having a plurality of regularly spaced notches about the entire circumference thereof, a

washer mounted on the bolt, a projection extending from the inner edge of said washer and registering with the spline groove in the bolt to prevent rotation of the washer on said bolt, and a plurality. of locking tongues formed about the exterior circumference of said washer andl within an angular space equal to that between a pair of notches on the nut flange, the angular distance between the first: and second tongues being an even multiple of that between the second and third, andthe distancebetween the third and fourth being an odd multiple of that between the rst and second tongues.

45. In testimony4 whereof, I have hereunto affixed my signature.

IRVINE WILKINSON. 

